Joseph nock



nitrh rates @anni @fitta 'JOSEPH Noon, oF WASHINGTON, DISTRICT oreOLIIMBIA.

i Letters Patent No. 65,261, dated fay 28, 1867.

IMPROVEMENT IN TRUNK-LOCKS.

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TO ALL WHOM `I'I MAY CON CERN:

Be it known that I, JOSEPH NOCK, of the city of Washington, in theDistrict of Columbia, have invented certain new and useful improvementsin Trunk and Chest-Locks; and'I do hereby declare the following to be afull and exact description of the same, reference being had to thedrawings that accompany and form a part of these specifications, inwhich-- i Figure I is a plan view, transparent, showing a'series oftumblers and levers.

Figure II, sectional view of the above.

Figure III, plan view of lock, internal arrangements the same as Fig. I.

Figure IV, sectional view of the lock shown in Fig. III.

Figure V, view of the tumblers and key when in position to allow the topof the trunk to be raised.

It will be seen that the Alocks shown in Figs. I and III are'the lsame,only with this difference, that the rst has the plate A in front of theinner parts, and is thus calculated to go on leather trunks. Tha't shownin Fig.

III has the plate A back ofthe inner works, and is thus suited to beused on w0oden'trunks or chests, Ithe bodyv 'of the lock being set intothe wo'od.

.Letter A represents the ordinary lock-plate, to which the other partsare attached; letter B, staple or hook letter C, key-pivot letters d d,levers; ,letters e e e e, series of tumblers; letters g g y g, springsattached to the tumblers; letters h L 7L L, catches on the tumblers toclasp the hook B; letters z'z'zz', openings for the rivets, by which thelock is attached to the trunk; letter j, fulcrum of the levers d dletter la, pin to prevent' the said levers from falling too low.

My invention relates to the use and combination of a series of tumblers,e c e e, with a series of levers, in a manner the most simple, yet suchas `to secure a degree of safety and durability far beyond anythingheretofore known in trunk-locks. V'lhere are various reasons why thetumblers should have double catches L 7L, that is, on both sides of thecatch-bolt B. lOne is 'that the staple B, when entering among thetumblers, may have bearing on both sides of' the lower bevelled end,otherwise the staple is racked to one side every time the lid is closed,and the staple soon becomes loosened inthe plate that holds it, or theplate itself becomes loose, or the hinges of the lid are strained, orall these may and often do happen. Another reason for this structure istheY great safety secured, for the staple can only be withdrawn whensome of the tumblers are turned on the common pivot 0 in onedirection,and others in the opposite direction. This could not wellA be done withthe tumblers alone, hence the introduction of the levers d d. New,suppose the right key to be used; the wards that act on the levers rl draise them, and they in turn act on the lower left-hand corner of thecorresponding tnmblers,

and throw back the upper right-hand catches, and at the same time theother wards of the key act on the lower ends of the other tumblers,carrying those lower ends towards the right arid the upper left-handcatches to the left, when the key, levers, and tumblcrs assume thepositions indicated in Fig. V. It is not enough merely to move thetuinblcrs in the right direction; each must be moved just so far and atthe right time, and each lever raised just so much and at the righttime, or the lock will not open.y Should any one ofthe tumbler-s bemoved too little or too far, or part of them too far and others'toolittle, or some of them just right and others n dt enough or too much,or all together, in the right direction, but too far or not far enough,or should some'lic moved and others not at all, as by acting on thelevers only, the lock will not open.

It will be readilyunderstood that I do not confine myself to any givennumber of levers or tumblers. I may use more of one and less of theother, or vice ecran, as I may wish to vary the combination. In these Ihave shown I use three tumblers and two levers, arranged as shown inFigs. II and IVr What I claim as my invention, and desire to secure byLetters Patent, is

4A series of springtu1nblcrs, E, and lcvcrs d, so arrangedand combinedthat the key shall act directly upon a portion of said tumbler-s torelease them from the staple, and at the same time shall act on thelevers d, causing them to act upon and release other of the tumblers, inthe manner substantially as described.

y JOSEPH NOCK.

Witnesses: I

D. C. Conny, Cime. F. Winsen.

